HD 63754
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  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis[1] |
| Right ascension | 07h 49m 45.26437s[2] |
| Declination | −20° 12′ 27.4778″[2] |
| Apparent magnitude (V) | +6.55[3] |
| Characteristics | |
| A | |
| Evolutionary stage | Main sequence[1] |
| Spectral type | G0V[4] |
| B | |
| Evolutionary stage | Brown dwarf[1] |
| Spectral type | L/T[1] |
| Astrometry | |
| Radial velocity (Rv) | 45.03±0.12[2] km/s |
| Proper motion (μ) | RA: −33.726 mas/yr[2] Dec.: −125.768 mas/yr[2] |
| Parallax (π) | 19.9317±0.0201 mas[2] |
| Distance | 163.6 ± 0.2 ly (50.17 ± 0.05 pc) |
| Absolute magnitude (MV) | 3.03±0.05[5] |
| Orbit[1] | |
| Period (P) | 73.4+16 −9.4 yr |
| Semi-major axis (a) | 19.9+2.7 −1.6 AU |
| Eccentricity (e) | 0.260+0.065 −0.059 |
| Inclination (i) | 174.81+0.48 −0.50° |
| Longitude of the node (Ω) | 40.2+8.1 −7.1° |
| Argument of periastron (ω) (secondary) | 311+28 −271° |
| Details | |
| A | |
| Mass | 1.41±0.15[1] M☉ |
| Radius | 2.122±0.043[2] R☉ |
| Luminosity | 5.061±0.011[2] L☉ |
| Surface gravity (log g) | 4.04±0.06[6] cgs |
| Temperature | 6,088±32[6] K |
| Metallicity [Fe/H] | +0.2±0.03[6] dex |
| Age | >3.4[1] Gyr |
| B[1] | |
| Mass | 81.9+6.4 −5.8 MJup |
| Radius | 0.86±0.02 – 0.95±0.05 RJup |
| Luminosity | 2.82+0.57 −0.47×10−5 L☉ |
| Surface gravity (log g) | 5.3±0.02 – 5.43±0.02 cgs |
| Temperature | 1,344±71 – 1,413±177 K |
| Age | 4.7+2.9 −1.1 – 6.4+4.3 −3.1 Gyr |
| Other designations | |
| BD−19 2085, HD 63754, HIP 38216, HR 3048, TYC 5989-2216-1, 2MASS J07494527-2012272 | |
| Database references | |
| SIMBAD | data |
HD 63754, also known as HR 3048, is a G-type dwarf star, located in the constellation Puppis some 164 light-years away. It is orbited by a brown dwarf companion.
The stellar classification of HR 3048 is G0V,[4] meaning that it is a main-sequence star fusing atoms of hydrogen into helium at its core. It has 1.41 times the mass of the Sun,[1] 2.1 times the radius of the Sun, as well as five times its luminosity.[2] This star appears slightly evolved as a main sequence star, and has an age estimated to be higher than 3.4 billion years.[1] The surface of HD 63754 has a temperature of 6,088 K,[6] giving it a yellow-white hue typical of early G-type stars.[7] It is metal-enriched, with an abundance of iron 60% larger than that of the Sun.[6]
Its apparent magnitude of 6.55[3] means that it is slightly below the limit for naked eye visibility of 6.5m. This limit, however, depends on many factors such as pupil dilatation and light pollution. While HD 63754 is not naked-eye visible in most skies,[8] it may be visible using a small telescope[9] or binoculars instead.[10]
Motion
HD 63754 is approximately 160 light-years from Earth[2] and is estimated to be at least 3.4 billion years old.[1] The space velocity components of this star are U = −6, V = −50 and W = −20. It is orbiting the Milky Way with a minimum distance of 5,550 pc (18,100 light-years) and a maximum distance of 8,030 pc (26,200 light-years) from the Galactic Center. Its orbit lies no more than 200 pc (650 light-years) from the galactic plane.[5]
